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STOVE OR FURNAGE. No. 391,559. Patented oct. 21s, 1888.

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No. 391,559. l y Patented 00.13. 23, 1888.

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CHARLES RIDGVAY, OF BOSTON, MASSACHUSETTS, ASSIGNOR TO THE RIDGVAY FURNACE AND STOVE COMPANY, OF NASHUA, NEW HAMP- SHIRE.

STOVE OR FURNACE.

SPECIFICATION forming part of Letters Patent No. 391,559, dated October 23, 211.888.4

Application iilcd March 12, 1886. Serial No. 194,938. (No model.)

To aZZ whom t may concern:

Be it known that I, CHAnLns L. RIDGWAY, of Boston, in the county of Suffolk and State of Massachusetts, a citizen of the United States, have invented a new and useful Improvement in Stoves or Furnaces, of which the following is a full, clear, and exact description, reference being had to the accompanying drawings, forming a part of this specification, in explaining its nature.

The invention is an improvement upon that described in United States Patent No. 281,795 which was issued to me July 2-1, 1888, for heating-stoves, and it relates especially to thefrepot or fuel-chamber thereof. In the patent referred to I have described a fire-pot which is composed of vertical bars which are separated by vertical recesses or spaces and united at their upper and lower edges, the said firepot being supported in a chamber forming a part of the combustion-chamber and separated from the ash-pit by a partition-plate, which causes the air for supporting combustioi to pass through the grate into the lirepo The present invention relates to a fire-pot of somewhat different construction from that shown in said patent, for while, like that, it is composed of barred vertically placed sections, the bars and the recesses or spaces between them are arranged horizontallyinstead of vertically, as will be hereinafterindicated.

Referring to the drawings, Figure lis acentral vertical section of a furnace having my improved lire-pot. Fig. 2 shows in vertical section the iire-pot and devices for supporting it. Fig. 3 is a top plan view of the lire-pot.

A is the ash-pit chamber; B, the grate; C, the hre-pot or fuel-chamber; D, the tire-pot wall; E, the chamber about the tire-pot wall; e, the partition-plate, whichseparates the encircling-chamber E from the ash-pit; E', the combustionchamber; e', the radiator wall or casing; e2, the coal-guard; e3, the entrance or passage to the encircling-chamber E about the fire-pot wall, and c4 the entrance or passage to the combustion-chamber.

The fire-pot wall is made either integral or in sections, as may be preferred. I consider it desirable, for many reasons, to make it in` vertically-placed sections d, and I haveso represented it in the drawings. The fire-pot wall may be composed of as many of these sections as desired. Each section comprises the horizontal bars d', united at their ends to the vertical bars or parts cl3, the bars d alternating with the horizontal spaces d2. To secure the several sections of the fire-pot wall together I prefer the construction representedthat is, one employing an annular plate, c, having a recess, e5, to receive the lower extremities of the assembled sections, and against the vertical wall or face e6 of which they may be held by a fire-pot ring. The upper parts of the sections are held together by the ring F,which tits upon their exterior surface and may be fastened thereto by bolts or in any other desired way.

'The tire-pot wall may have the horizontal spaces or openings alternating with the horizontal bars throughout nearly its entire vertical extent, as represented in Fig.2,or throughout only a portion thereof. In Fig.. l,I have shown the upper part of the nre-pot wall thus provided with the bars and openings and the lower part as solid or unprovided with them.

It will be observed that the chamber which surrounds or encircles the fire-pot wall has no direct connection with the outer air. In other words, it does not receive air for supporting combustion, and it opens directly into the combustion-chamber. All air for supporting combustion passes through the ashpit and the grate, and. consequently the volatile products of combustion not only pass in part from the fire-pot directly into the combustion-chamber, but also pass in part outwardly into the chamber encircling the fire-pot. This insures a very uniform combustion of the fuel, and also increases very materially the heat-radiating surface of the furnace or stove.

In the invention already referred to, upon which this is an improvement, I have shown an open fire-pot wall provided with long vertical bars. This construction presented various advantages, and for most purposes its use has been attended withsatisfactory results; but to prevent thebars from becoming warped under great heat and weight it is desirable that they beless long, and I have accomplished this purpose or result by making them horizontal instead of vertical. Under this construction I am enabled to make them much shorter, and consequently much stronger.

I do not herein claim, independently,either the radiator provided with direct and indirect exit-passages, incidentally represented in the drawings, the described revoluble grate-supporting plate resting upon a series of antifriction balls, or a shaft bearing a pinion which operates in connection with notches in the iire-pot-wall supporting-plate to cause the same to be revolved, these constructions being respectively embraced in applications serially numbered 193,580, filed by me in the United States Patent Office, March 1, 1886, and 172,748, filed July 27, 1885, and in United States Patent No. 281,795, issued to me on the 24th day of July, 1883.

Having thus fully described my invention, I claim and desire to secure by Letters Patent of the United Stateswhich has the vertical bars cl3 and the horizontal bars d', arranged to provide or form the spaces or recesses di between them, all substantially as described.

2. A sectional `fire-pot consisting of the sections d, having the horizontal recesses d and the vertical bars d3, combined with the annular plate e, having in its upper side a shouldered recess to receive the lower ends of the said sections, and the ring F, surrounding the upper ends of the said sections, substantially as shown and described.

3. The described fire-pot wall, consisting of a series of vertical sections placed edge to edge, each section forming the segment of a circle and each provided with a series of hori zontal slots, a shouldered or recessed securing-plate which encircles and overlaps the lower extremities of the sections, and a securing-ring which encircles the upper extremities ofsuch sections, substantially as shown and set forth.

CHARLES L. RIDG WAY.

Witnesses:

F. ERAYMOND, 2d, J. M. DoLAN. 

